CLIM mail archive
Re: Screen update and feeling the bits between your toes
Date: Mon, 14 Oct 1991 15:55 EDT
From: email@example.com (Jim Mayer)
> This is exactly the facility that DRAGGING-OUTPUT is intended to
> provide, except that it presently uses REPLAY instead of "bitblt" to do
> the feedback during dragging. DRAGGING-OUTPUT could be changed to use
> "bitblt", except that since "bitblt" can paint only rectangular regions,
> the dragging of non-rectangular objects could damage some things that
> should not be damaged.
Just a note... Under window systems like X11 and NeWS, CopyArea
(bitblt) is affected by the current clipping region and can, in fact,
paint non-rectangular areas.
How about that. I plead guilty to knowing less about X11 than I should,
and did not know that clipping regions could be non-rectangular. Thanks.
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